| 摘要 |
PROBLEM TO BE SOLVED: To provide an ejection port plug incorporating an unsealing blade wherein there is no danger that a hand or the like be injured by the unsealing blade of the ejection port plug when a used paper container for liquid is dissembled for separate garbage collection. SOLUTION: A two-staged guiding inner cylinder 230 comprising an upper stage cylinder 231 and a lower stage cylinder 232 having a smaller diameter than that of the upper stage cylinder formed with a plurality of spiral guide slopes 233, 234 on respective outer peripheral faces is made to hang on a lower face of a top plate of a cap 200. A cover cylinder 130 formed with a plurality of vertical grooves on an internal face of an ejection cylinder of a spout 100, having a plurality protrusions sliding in the vertical grooves on an outer peripheral face, formed with a plurality of vertical grooves on an internal face and formed with a plurality of guide slopes 133 in slide contact with the guide slopes of the upper stage cylinder of the guiding inner cylinder on an inner peripheral face is slidably inserted. In addition, an unsealing cylinder 140 having a plurality of protrusions sliding in the vertical grooves of the cover cylinder on an outer peripheral face, formed with an unsealing blade 142 at a lower end, and formed with a plurality of guide slopes 144 in slide contact with the guide slopes of the lower stage cylinder of the guiding inner cylinder is lidably inserted. |
